/*
 * (c) Copyright 2007, 2008 Hewlett-Packard Development Company, LP
 * All rights reserved.
 * [See end of file]
 */

package arq.examples.bgpmatching;

import java.util.Iterator;

import com.hp.hpl.jena.graph.Triple;
import com.hp.hpl.jena.sparql.core.BasicPattern;
import com.hp.hpl.jena.sparql.engine.ExecutionContext;
import com.hp.hpl.jena.sparql.engine.main.Stage;
import com.hp.hpl.jena.sparql.engine.main.StageBasic;
import com.hp.hpl.jena.sparql.engine.main.StageGenerator;
import com.hp.hpl.jena.sparql.engine.main.StageList;

/**
 * Example stage generator that compiles a BasicPattern into a sequence of
 * individual triple pattern stages.
 */

public class StageGeneratorAlt implements StageGenerator {
	public StageList compile(BasicPattern pattern, ExecutionContext execCxt) {
		System.err.println("MyStageGenerator.compile:: triple patterns = "
				+ pattern.size());

		if (false) {
			// Illustrative -- call the most basic one one (no property
			// functions)
			StageList sList = new StageList();
			sList.add(new StageBasic(pattern));
			return sList;
		}

		if (false) {
			// Illustrative -- call the most basic one one (no property
			// functions)
		}

		StageList sList = new StageList();
		for (Iterator iter = pattern.getList().iterator(); iter.hasNext();) {
			Triple triple = (Triple) iter.next();
			Stage stage = new StageAlt(triple);
			sList.add(stage);
		}
		return sList;
	}
}

/*
 * (c) Copyright 2007, 2008 Hewlett-Packard Development Company, LP All rights
 * reserved.
 * 
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer. 2. Redistributions in
 * binary form must reproduce the above copyright notice, this list of
 * conditions and the following disclaimer in the documentation and/or other
 * materials provided with the distribution. 3. The name of the author may not
 * be used to endorse or promote products derived from this software without
 * specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
 * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */